with the .26 if you run it rich, you will be fine. to tune it, after break-in, adjust the lowspeed and high speed needle in small, small increments. this engine is sensitive and hates being adjusted. they love to run rich, so you may not even have to tune it, plenty of power.

the .28 is less expensive, and made by a different company. the .26 is italian made and is quality material. i never liked my .28 [&o]